With corridors made of bamboo, a roof layered with flowering sedum plants and buildings named after Mario, Donkey Kong, Yoshi and Wario, Nintendo's new Redmond headquarters sounds every bit as fanciful as the games the publisher makes.

The 300,000-square-foot-building sits on a 10-acre site on the Nintendo campus, home to most of the Japanese company's U.S. staff, which busy themselves with the business of video games, translating and maintaining Nintendo's U.S. online servers.

Nintendo's U.S. base includes an employee cafeteria called Cafe Mario and a conference room named the Master Sword, according to TechFlash.com.

"Hopefully this new building will help (employees) to be even more creative and productive, and continue to put smiles on the faces of our consumers," said Satoru Iwata, Nintendo's president, who flew in from Japan for the opening ceremony, attended by Gov. Chris Gregoire and other dignitaries, including Mario and Luigi.